Flexoelectricity-driven periodic buckling in multilayer graphene bonded to compliant substrate
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43579_2022_239_ReferencePDF.pdf
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Author(s)
Kothari, Mrityunjay
Kim, Kyung-Suk
Date Issued
September 7, 2022
Publisher
Springer International Publishing
Citation
Kothari, Mrityunjay and Kim, Kyung-Suk. 2022. "Flexoelectricity-driven periodic buckling in multilayer graphene bonded to compliant substrate."
Version
Author's final manuscript
Abstract
Abstract
Flexoelectricity in multilayer graphene (MLG) buckling can stimulate kink-shaped crinkle formation. In the process, the bifurcation becomes subcritical and the suspended-MLG’s crinkle curvature is localized to a narrow band of
$$\sim 2nm$$
∼
2
n
m
width. We extend the study to flexoelectric layers bonded to a soft elastic substrate. Elastic substrates can guide the morphology of MLG and produce periodic patterns. We show that MLG’s flexoelectricity together with substrate elasticity can produce periodic crinkles, which qualitatively explains the grade-dependent mosaic spreading in highly oriented pyrolytic graphite (HOPG). Experimental measurements of HOPG’s surface-slope variations indeed confirm curvature localization at the crinkle valleys and ridges.
Graphical abstract
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1557/s43579-022-00239-9
